class BMI:
    def __init__(self,name,age,weight,height):
        self.__name = name
        self.__age = age
        self.__weight = weight
        self.__height = height

    def getBMI(self):
        KILOGRAMS_PER_POUND = 0.45359237
        METERS_PER_INCH = 0.0254
        bmi = self.__weight * KILOGRAMS_PER_POUND / ( (self.__height * METERS_PER_INCH) ** 2)
        return round(bmi*100) / 100

    def getStatus(self):
        bmi = self.getBMI();
        if bmi< 18.5:
            return "超轻"
        elif bmi < 25:
            return "标准"
        elif bmi<30:
            return "有点重"
        else:
            return "该减肥了"


    def getName(self):
        return self.__name

    def getAge(self):
        return self.__age

    def getWeight(self):
        return self.__weight

    def getHeight(self):
        return self.__height